MBRS260T3G - 2A 60V Schottky Rectifier SMB | onsemi
MPN: MBRS260T3G ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.42 | $0.42 |
| 10 | $0.38 | $3.80 |
| 100 | $0.3 | $30.00 |
| 500 | $0.24 | $120.00 |
| 1,000 | $0.19 | $190.00 |
| 5,000 | $0.15 | $750.00 |
MBRS260T3G Overview
A Schottky rectifier is a majority-carrier device built around a metal-semiconductor junction rather than a PN junction, which eliminates minority-carrier reverse-recovery charge and yields switching transitions that are essentially limited by the parasitic capacitance of the junction. Within the power-management hierarchy, the MBRS260T3G sits in the discrete-semi class between general-purpose rectifiers and ultrafast recovery diodes, offering lower forward drop than ultrafast parts at the cost of higher reverse leakage, and is most often deployed at 5 V to 48 V rails where its switching-speed advantage outweighs the leakage penalty.
Key electrical features include 60 V DC blocking voltage, 2 A continuous forward current, 630 mV typical forward drop at 2 A, and a peak non-repetitive surge current of 25 A for half-sine pulse loading per the onsemi datasheet. The device is rated for an operating junction temperature of -65C to +150C and ships in the surface-mount SMB (DO-214AA-style) outline with a glass-passivated junction and a corrosion-resistant finish suitable for automated pick-and-place lines.
Typical applications for the MBRS260T3G include low-voltage, high-frequency switching power supplies as output rectifiers, free-wheeling diodes across inductive loads such as motor coils and solenoids, and polarity-protection diodes at the inputs of USB and battery-powered portable products. Its low forward drop and absence of reverse-recovery charge make it particularly attractive for synchronous-rectifier secondary sides, OR-ing controllers, and buck-derived point-of-load rails where conventional PN rectifiers would otherwise limit efficiency.
When designing with this part, place the SMB pad pattern on a thermal copper pour of at least 100 mm squared to keep the junction temperature rise below the datasheet derating curve, and parallel the device carefully because Schottky forward drops are not as tightly matched as PN rectifiers. The SMB cathode is marked with a single colored band, and the part is fully RoHS-compliant per the onsemi product page.
Drop-in alternatives for MBRS260T3G — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MBRS260T3G (same form factor and footprint) — differing in Package, Diode Type, MSL Level, Construction, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
SS26T3G
✅ Drop-In📋 Reference alternative (not in catalog)
NRVBS260T3G
✅ Drop-In✓ In Stock
$0.15 / Unit
View Datasheet →MBRS2100T3G
✅ Drop-In📋 Reference alternative (not in catalog)
MBRS240LT3G
✅ Drop-In📋 Reference alternative (not in catalog)
SS26-E3/52T
✅ Drop-In📋 Reference alternative (not in catalog)
CMSH2-60M
✅ Drop-In📋 Reference alternative (not in catalog)
MBRS260T3G Maximum Ratings & Electrical Characteristics
| Diode Type | Schottky Power Rectifier (single) |
| Package | SMB (DO-214AA-style surface mount) |
| DC Reverse Voltage (Vr) Max | 60 V |
| Average Rectified Forward Current (Io) | 2 A |
| Forward Voltage (Vf) Max @ If | 630 mV @ 2 A |
| Peak Non-Repetitive Surge Current (Ifsm) | 25 A (8.3 ms half-sine, per datasheet) |
| Reverse Recovery Time (trr) | Negligible (Schottky, minority-carrier device) |
| Operating Junction Temperature | -65C to +150C |
| Storage Temperature | -65C to +150C |
| Mounting Type | Surface Mount |
| Construction | Epitaxial with oxide passivation and metal overlay contact |
| Polarity | Color band indicates cathode |
| MSL Level | 1 per JEDEC J-STD-020 |
| RoHS Status | Compliant |
| REACH Status | Compliant |
| Primary Applications | Low-voltage high-frequency switching PSUs, free-wheeling, polarity protection |
MBRS260T3G Pin Configuration
| Pin 1 | Cathode (K) — Marked with colored band; positive terminal during forward conduction |
| Pin 2 | Anode (A) — Negative terminal during forward conduction; thermal slug on bottom for heatsinking |
Typical Applications
MBRS260T3G is suitable for 7 applications: Switch-Mode Power Supply Output Rectification, Free-Wheeling Diode for Inductive Loads, Polarity Protection at Battery / USB Inputs, OR-ing Diode for Redundant Power Paths, Solar Panel Blocking Diode, DC Motor Snubber and Commutation, Buck Converter Free-Wheel Path.
Switch-Mode Power Supply Output Rectification
The MBRS260T3G fits 12 V to 48 V switch-mode power supply secondary rectification because its 630 mV forward drop at 2 A is significantly lower than an equivalent ultrafast PN rectifier (typically 950 mV), and the absence of reverse-recovery charge eliminates the switching-loss spike that otherwise limits frequency. Placed at the secondary side of a flyback or forward converter, it reduces conduction loss by 30-40% and removes the need for snubber networks around the diode. The 60 V Vr provides adequate margin above the 48 V reflected-voltage transients seen in 24 V-48 V flyback designs, while the SMB package footprint enables compact high-density PCB layouts.
Recommended
Free-Wheeling Diode for Inductive Loads
As a free-wheeling diode across relay coils, solenoid valves, and motor windings, the MBRS260T3G clamps the inductive kick when the switch opens. Its Schottky construction means turn-off is limited only by junction capacitance rather than reverse-recovery, producing a clean flyback waveform with minimal EMI ringing and zero reverse-current spike that could otherwise stress the driving MOSFET. The 60 V blocking rating covers 12 V and 24 V automotive and industrial actuator coils, and the 2 A average forward current matches typical coil currents at 100% duty. The SMB outline allows the diode to sit directly across the coil terminals for minimal loop inductance.
Recommended
Polarity Protection at Battery / USB Inputs
Placed in series with the positive rail at a USB-C or single-cell Li-ion product input, the MBRS260T3G blocks reverse-polarity connection with only a 500-630 mV forward drop, preserving most of the 5 V or 12 V input for downstream regulators. Schottky rectification is preferred here because there is no reverse-recovery event when the input is hot-plugged, and the absence of minority-carrier storage means the diode does not briefly conduct in reverse during connector mating bounce. The 60 V Vr comfortably exceeds automotive load-dump transients on 12 V systems, and the SMB footprint supports compact handheld and IoT product designs.
Recommended
OR-ing Diode for Redundant Power Paths
In redundant power architectures where two supplies feed a common rail, the MBRS260T3G serves as an OR-ing element. The 630 mV forward drop is low enough to keep the paralleled-supply voltage drop within 5% of the source, and the Schottky speed eliminates the cross-conduction glitches seen with slower PN rectifiers when one source collapses. The 60 V Vr supports OR-ing of 24 V or 48 V rails, while the 2 A rating handles typical telecom and industrial PoE midspan currents. Designers typically add a small FET bypass in production designs to reduce the 630 mV loss, but the discrete diode remains the lowest-cost option for prototyping and low-power OR-ing.
Recommended
Solar Panel Blocking Diode
In small off-grid solar charge systems, the MBRS260T3G acts as a blocking diode at the panel output to prevent reverse current flow from the battery back into the panel at night. The low forward drop maximizes harvested energy compared to a standard PN rectifier, while the 60 V Vr exceeds the open-circuit voltage of typical 12 V or 24 V panels (about 21 V or 42 V). The SMB outline is rugged enough for outdoor enclosures when conformal coating is applied, and the -65C to +150C operating range handles the temperature swings of rooftop installations. Designers should add a TVS such as the SMBJ series for lightning-induced transients.
Recommended
DC Motor Snubber and Commutation
Across the commutator of small brushed DC motors in automotive HVAC blowers, seat adjusters, and window lifts, the MBRS260T3G suppresses the inductive kick that otherwise generates EMI and erodes the brush-commutator interface. Its Schottky construction means turn-off is purely capacitive, producing a soft commutation waveform that reduces brush arcing and extends motor life. The 60 V Vr covers 12 V automotive transients, the 2 A rating handles fractional-horsepower motor currents, and the SMB footprint fits inside motor housings. For higher-current motors, parallel multiple MBRS260T3G devices on a shared thermal pad.
Recommended
Buck Converter Free-Wheel Path
In non-synchronous buck converters and as a parallel free-wheel element in synchronous buck designs, the MBRS260T3G provides a guaranteed current route when the high-side MOSFET turns off, eliminating the body-diode conduction loss and reverse-recovery spike. The 630 mV drop is acceptable at light load and during start-up when the synchronous FET is disabled, and the 60 V Vr supports 24 V and 48 V input buck regulators. The SMB package offers compact placement next to the synchronous FET, minimizing the high-frequency switching loop area.
Recommended
Recommended Products Summary
Engineering reference data for MBRS260T3G — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SS26T3G | NRVBS260T3G | MBRS2100T3G | MBRS240LT3G | SS26-E3/52T | CMSH2-60M |
|---|---|---|---|---|---|---|---|
| Package | SMB (DO-214AA) | SMB (DO-214AA) - same | SMB (DO-214AA) - same | SMB (DO-214AA) - same | SMB (DO-214AA) - same | SMB (DO-214AA) - same | SMB (DO-214AA) - same |
| Brand | onsemi | onsemi | onsemi | onsemi | onsemi | Vishay Intertechnology | Central Semiconductor |
| DC Reverse Voltage (Vr) Max | 60 V | 60 V | 60 V | 100 V | 40 V | 60 V | 60 V |
| Average Rectified Forward Current (Io) | 2 A | 2 A | 2 A | 2 A | 2 A | 2 A | 2 A |
| Automotive Qualification | No (standard grade) | No | Yes (AEC-Q101) | No | No | No | No |
| RoHS / Lead-Free | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes |
Key Differentiators
- 60 V blocking at 2 A in a compact SMB package (vs SS26T3G)
- Cost-optimized standard grade with onsemi's full lifecycle support (vs NRVBS260T3G)
- Higher voltage headroom than 40 V class parts (vs MBRS240LT3G)
- Tighter Vf than the 100 V MBRS2100T3G (vs MBRS2100T3G)
Design Notes
Estimated: At 2 A continuous forward current and a forward drop of 0.63 V, the MBRS208-160 dissipates about 1.26 W. The SMB package on a standard 1 oz FR-4 PCB with a 100 mm squared cathode copper pad yields roughly 30 C/W RθJA, giving a junction temperature rise of 38 C above ambient. For 2 A continuous at 50 C ambient, plan a copper pad of at least 150 mm squared or add topside copper to stay under the 150 C Tj rating. Thermal vias under the SMB slug dramatically reduce junction temperature.
Use the SMB (DO-214AA) land pattern recommended in JEDEC and onsemi application notes: cathode pad about 80 mm squared, anode pad about 50 mm squared, with thermal vias under the cathode slug to a copper pour on the opposite side. Keep the high-frequency switching loop (DC bus - diode - transformer secondary) as small as possible to minimize ringing. Avoid running sensitive analog traces under the diode's thermal copper to reduce ground-noise coupling.
Do not exceed the 60 V Vr - even brief transients above 70 V will avalanche the junction and cause cumulative degradation. Avoid reverse-biased operation at high temperature because Schottky leakage roughly doubles every 10 C and may exceed 5 mA at 125 C. Do not parallel MBRS260T3G devices for higher current unless they are matched or ballasted with small series resistors; Schottky forward drops vary enough that current hogging can occur.
Keep the diode body away from heatsinks of other power devices to avoid coupling additional thermal load. Maintain at least 2 mm clearance between the SMB body and adjacent tall components for reliable automated optical inspection. The cathode band indicator should face the same direction across the BOM to reduce assembly-line mistakes and simplify visual inspection at incoming quality control.
Compliance Information
RoHS and REACH compliant per onsemi product page. Halogen-free per onsemi environmental documentation. Not AEC-Q100 qualified (choose NRVBS260T3G for AEC-Q101 automotive).
